-#set multiplot
-#set key left
-#plot 'out.txt' using 1:3 t '', \
-# 'out.txt' using 1:3 t 'Total P' with points, \
-# 'out.txt' using 1:4 t '', \
-# 'out.txt' using 1:4 t 'PO4' with points
-
-#if ( $2 = 3 ) plot 'out.txt' using 1:3
-#plot 'out.txt' using ($1):($2==3 ? $3 : 1/0)
-#plot 'out.txt' using 1:3 t '' with points
-plot 'out.txt' using ($1):($3) t '' with points
-#plot 'out.txt' using ($1):($3) t '' with lines
+splot 'out.txt' using ($1):($2):($3) t '' with points
+#splot 'out.txt' using ($1):($3) t '' with lines